WO2006062205A1

WO2006062205A1 - Weft knitting machine

Info

Publication number: WO2006062205A1
Application number: PCT/JP2005/022697
Authority: WO
Inventors: Toshinori Nakamori
Original assignee: Shima Seiki Manufacturing Limited
Priority date: 2004-12-09
Filing date: 2005-12-09
Publication date: 2006-06-15
Also published as: CN100554555C; JP4348286B2; CN101072908A; DE112005003021T5; JP2006161230A; DE112005003021B4

Abstract

A weft knitting machine capable of supporting the knitting needles of needle beds against sufficient side loads even if multiple stages of needle beds are formed on the same side of a trick gap space. Fixed sinkers (9) and (10) are mounted at the tips of lower stage needle beds (3b) and (4b) and knitting needle supporting projections (11) and (12) are formed on the fixed sinkers (9) and (10) so that needle bodies (23a) and (24a) advancing from upper stage needle beds (3a) and (4a) to the trick gap space (2) can be supported from the side. The knitting needle supporting projections (11) and (12) are formed at positions where they are not interfered with the operation of the compound needles (21b) and (22b) of the lower stage needle beds (3b) and (4b). Thus, even if the needle bodies (23a) and (24a) of the upper stage needle beds (3a) and (4a) receive a load to the side, the large bending thereof can be suppressed by the contact thereof with the knitting needle supporting projections (11) and (12) and sufficient side support can be performed for the needle bodies.

Description

Flat knitting machine

Technical field

[0001] The present invention relates to a flat knitting machine such as a four-bed flat knitting machine, in which at least one of a front needle bed and a rear needle bed arranged to face each other with a tooth opening therebetween has a two-stage needle bed. About.

Background art

Conventionally, in a flat knitting machine, a knitting operation in which a large number of knitting needles arranged side by side in a needle bed advance and retreat into the tooth opening, and a knitting yarn supplied to the tooth opening is drawn in to form a stitch loop. The ground is organized. Parallel needle grooves are formed in the needle bed, and the knitting operation of the knitting needles is guided by the needle grooves. The knitting needle is slidably displaced in the direction of advancing and retreating with respect to the tooth opening in the needle groove, and is supported on the side surface of the needle groove in the direction perpendicular to this direction. However, since the knitting yarn is applied to the tip side of the knitting needle during the knitting operation, the needle groove force is also exposed. The tip side facing the mouth of the needle bed is required to widen the opening so that the knitting needle does not hinder the drawing of the knitting yarn, and the needle groove cannot be formed to the tip end side. Therefore, in the state where the knitting needle used for forming the stitch loop has the tip advanced to the tooth opening, a lot of portions that are not supported laterally by the needle groove are exposed.

To support the side of the knitting needle at the distal end portion of the needle bed frontage widely summer, the prior art of providing a projection is known (e.g., see JP Utility Model 42 6263.) ₀ The preceding In the technology, the knitting needles at both ends of the knitting width are pulled inward by the knitting fabric, and the projections are formed on the side corresponding to the inner side in the width direction at the center of the needle groove symmetrically with respect to the center force of the needle bed. It is provided to limit the bending of the knitting needle.

There is also known a prior art in which a guide groove for accommodating the lower part of the knitting needle is provided on the most distal side of the needle bed (see, for example, JP-A-9 49153). _{0 In} this prior art, the tooth mouth is sandwiched. It is a two-bed flat knitting machine with the front and back needle beds facing each other, and each knitting needle has a jumper on one side. A sinker is placed between the knitting needles on each needle bed, and the lower part of the knitting needle is formed by a guide groove that forms a lateral load applied to the knitting needle by the knitting yarn to a depth that does not contact the jumping plate during knitting work. Receive and support. The guide groove is a lateral load applied to the knitting needle by the knitting yarn. It is provided to prevent bending of the knitting needle by preventing the knitting needle from bending, causing knitting accidents and collapse of the knitting structure.

The flat knitting machine, also being used four-bed flat knitting machine provided with a needle bed of each upper and lower stages in the longitudinal (e.g., Kokoku 1 57173 see JP.) ₀ In four-bed flat knitting machine, before and after Knitted fabrics can be knitted by combining the lower needle beds with each other, the lower lower needle with the upper upper needle bed, or the lower lower and the upper upper needle with each other. Various knitted fabrics can be knitted. However, as shown in Fig. 3 of Japanese Patent Publication No. 1-57173, the gap between the tips of the upper needle bed at the mouth is wider than the gap between the tips of the lower needle bed. Yes.

Even with a 4-bed flat knitting machine as shown in Japanese Examined Patent Publication No. 1-57173, the knitting needles on the lower side of the needle bed can be supported laterally to the same extent as the needle bed of the 2-bed bed. For example, a projection similar to that disclosed in Japanese Utility Model Publication No. 42-6263 can be provided at the tip of the needle bed to support the side of the knitting needle. However, in the upper needle bed, the distance between the tips facing the tooth opening is wider than the distance between the tips of the lower needle bed, so that it is difficult to support the knitting needle with the protrusions laterally.

Furthermore, since the tip position of the needle bed is separated from the tooth opening on the upper side, for example, when performing knitting on the upper needle bed, the hook at the tip of the knitting needle is placed on the needle bed side facing the center of the tooth opening. Even if the knitting needle is retracted to form the stitch loop after being advanced and supplied with the knitting yarn, the tip of the knitting needle is in a state of protruding the tip partial force of the needle bed. In such a state, the lateral support for the knitting needle holding the stitch cannot be sufficiently performed.

Disclosure of the invention

An object of the present invention is to provide a flat knitting machine that can sufficiently support a lateral load on a knitting needle of an upper needle bed even if it has two upper and lower needle beds on the same side facing the mouth. It is to provide.

The present invention includes a front needle bed and a rear needle bed that are arranged opposite to each other with a tooth gap interposed therebetween, and at least one of the front needle bed and the rear needle bed has two upper and lower needle beds. In the second-stage needle bed, the lower-side needle bed has a portion of the lower-side needle bed that is located on the mouth side of the mouth. A plurality of fixed thin forces that act as a thin force are provided for both a plurality of knitting needles that advance and retreat and perform a knitting operation, and a plurality of knitting needles that advance and retreat from the upper needle bed to the mouth to perform knitting operations

The fixed thin force includes a knitting needle in a position that does not interfere with the knitting operation in which the knitting needle of the lower needle bed advances and retreats with respect to the tooth opening and the knitting needle of the upper needle bed advances with respect to the tooth opening. The flat knitting machine is characterized in that a protrusion projecting toward the side surface of the knitting needle that advances from the upper side needle bed to the tooth opening is provided at a position facing the side surface.

In the present invention, the knitting needles and the fixed thin forces are alternately arranged in the two-stage needle bed, and the protrusions are provided on both side surfaces of the respective fixed thin forces. In the invention, the knitting needle for performing the knitting operation by moving back and forth from the lower needle bed to the tooth opening,

The slider including two blades formed with tanda at the tip of the mouth side can be moved forward and backward independently of the needle body, and the hook of the needle body is opened and closed with the blade of the slider. Compound needle,

The fixed thin force protrusion is provided with a slope that reduces the amount of protrusion when the tooth locus moves away, and the blade tip of the composite needle on the lower needle bed is guided by the slope.

In the present invention, the fixed thin force also has a function of laterally supporting the lower knitting needle bed with respect to the knitting needles.

Brief Description of Drawings

Objects, features and advantages of the present invention will become more apparent from the following detailed description and drawings.

FIG. 1 is a cross-sectional view showing a schematic configuration in the vicinity of the mouth 2 of a four-bed flat knitting machine 1 as an embodiment of the present invention.

2A and 2B are plan views showing a simplified configuration of the front needle bed 3 of the four-bed flat knitting machine 1 shown in FIG. 1 near the tooth mouth 2 divided into the upper needle bed 3a side and the lower needle bed 3b side. It is a figure.

FIGS. 3A and 3B are a plan view and a front view showing an example of the sinker member 50 that can be used as the fixed thin forces 9 and 10 of FIGS. 1, 2A, and 2B. FIG. 4 is a cross-sectional view schematically showing a wider range of the configuration of the four-bed flat knitting machine 1 than in FIG.

FIG. 5 is a cross-sectional view showing a state in which the needle body 23a is retracted in FIG.

FIG. 6 is a cross-sectional view showing that the knitting needle support protrusion 11 and the mouth wire 13 act equally on the front needle bed 3 shown on the left side in assisting knockover from the compound needles 21a and 21b.

BEST MODE FOR CARRYING OUT THE INVENTION

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings.

FIG. 1 shows a schematic configuration of a four-bed flat knitting machine 1 as an embodiment of the present invention in a cross section near the tooth mouth 2. In the four-bed flat knitting machine 1, the front needle bed 3 and the rear needle bed 4 that are opposed to each other with the tooth mouth 2 interposed therebetween have upper needle beds 3a, 4a and lower needle beds 3b, 4b, respectively. In the following description, components that are paired front and rear with the tooth opening 2 in between are indicated by an odd number on the front side and an even number on the rear side. In the upper and lower equivalent components, a is added to the upper side and b is added to the lower side, but a and b may be omitted when referring generically.

On the upper needle beds 3a and 4a, a plurality of upper and one-dollar plates 5 and 6 are erected. On the lower needle beds 3b and 4b, a plurality of lower and one-dollar plates 7 and 8 are erected. In the four-bed flat knitting machine 1, the upper needle beds 3a and 4a are supported by extending the portions near the mouth of the lower one-dollar plates 7 and 8 standing from the lower needle beds 3b and 4b. Fixed thin forces 9, 10 are attached to the tip of the lower needle bed 3b, 4b facing the mouth 2 from the mouth 2 side. The fixed thin forces 9 and 10 have knitting needle support protrusions 11 and 12, and can support the knitting needles of the upper needle beds 3a and 4b by the side of the mouth 2 with a lateral force.

Tooth tip wires 13 and 14 penetrate the tip portion facing the mouth 2 of the fixed thin force 9 and 10. It is preferable to use a hard metal wire such as a piano wire for the mouthpiece wires 13 and 14. The fixed thin forces 9 and 10 are fixed by being applied to the thin force multipliers 15 and 16 penetrating the portions of the lower needle beds 3b and 4b closer to the tooth mouth 2. Bands 17, 18; 19, 20 penetrate through the lower plate-dollar plates 7, 8 and the upper plate-dollar plates 5, 6 for positioning. Upper needle bed 3a, 4a and lower needle bed 3b, 4b with upper needle plate 5, 6 and lower knee The gap between the two sides of the dollar plates 7 and 8 becomes a needle groove that accommodates the knitting needle and guides the sliding displacement that advances and retreats to the tooth opening 2.

In the four-bed flat knitting machine 1 shown in Fig. 1, the upper needle beds 3a, 4a and lower metal beds 3b, 4b are used as the knitting needles on the front needle bed 3 and the rear needle bed 4. , 22a; 21b, 22b force S Such compound needles 21a, 21b; 22a, 22b are disclosed in, for example, Japanese Patent No. 3379947. In each composite gold † 21a, 22a; 21b, 22b, the gold † main body 23a, 23b; 24a, 24b and the slider 25a, 25b; , 26 can slide independently. At the tip of the needle body 23, 24, hooks 31a, 31b; 32a, 32b force are formed! The hooks 31 and 32 are opened and closed by a target displacement with respect to the sliders 25 and 26 and the gold plates 23 and 24. In such compound needles 21, 22, it is possible to use a labyrinth needle.

The fixed thin forces 9, 10 are also provided with support portions 33, 34 for supporting the needle bodies 23b, 24b of the lower needle beds 3b, 4b laterally. Even in the lower one-dollar plates 7 and 8, the part that is closer to the tooth opening 2 side than the upper needle bed 3a and 4a is the support part 35 that supports the needle body 23a and 24a on the upper needle bed 3a and 4a side. Acts as 36.

2A and 2B are plan views showing a simplified configuration of the vicinity of the tooth mouth 2 with respect to the front needle bed 3 of the four-bed flat knitting machine 1 of FIG. The front needle bed 3 and the compound needle 21 are inclined so that the side of the mouth 2 is higher. In the four-bed flat knitting machine 1, the rear needle bed 4 has basically the same configuration, so the matters described for the front needle bed 3 are the same for the rear needle bed 4. Applied. The compound needle 21 is provided with two blades 37 and 38 that form a tanda at the tip of the slider 25 on the tip side of the slider 25 so that the hook 31 of the needle body 23 is sandwiched between both sides. In this way, the slider 25 where the blade tip is separated, for example, as disclosed in FIG. 2 to FIG. 28 of Japanese Patent No. 291746 by the applicant of the present invention, is advanced to the tooth opening 2 rather than the hook 31. It can be used for transfer. In addition, as such a compound needle, there are other forces such as European Patent Application Publication No. 1302581 (EP1302581A1) and European Patent Application Publication No. 1233093 (EP1233093A1).

Figure 2A shows the upper needle bed 3a. In the upper needle bed 3a, as a side support for the needle body 23a of the compound needle 21a, the vicinity of the tip of the lower-single dollar plate 7 serves as a support part 35. Even if it does, its side support is inadequate. By forming the knitting needle support protrusion 11 on the fixed thin force 9, the side of the needle body 23a can be sufficiently supported at a position close to the tooth opening 2. As shown on the left side of FIG. 2A, when the compound needle 21a is retracted to form the new loop 40 of the stitch, the old loop 41 held by the slider 25a is hooked by the slider 25a. By overcoming 31a and knocking over, it will come off the compound needle 21a and form a stitch of the knitted fabric that knitted from the tooth mouth 2. For example, when the stitch at the knitting width end of the knitted fabric is pulled toward the center of the knitted fabric, the knitting yarn 42 connected to the old loop 41 rides on the knitting needle support projection 11 at the time of knockover. Can also serve as a knockover assist.

Further, the knitting yarn to be pulled in as the new loop 40 is pulled so as to be pulled into the tip force hook 31a of the fixed thin force 9 because the portion between the adjacent knitting needles is held by the tip of the fixed thin force 9. Even when the knitting yarn is a bundle of a plurality of thin yarns, the knitting yarn can be received on the knitting needle support projection 11 and not fallen into the side surface of the knitting needle.

Figure 2B shows the lower needle bed 3b. The knitting needle supporting protrusion 11 having the fixed thin force 9 is provided at a position where the needle main body 23b of the compound needle 21b does not interfere even when the needle main body 23b advances into the tooth mouth 2. However, when the slider 25b advances to the tooth opening 2 during manual operation such as maintenance or when the slider 25b moves away from the root of the cam that drives the slider 25b, the slope 39 becomes effective. In other words, as shown on the right side, the tips of the blades 37 and 38 are guided by the slope 39 provided on the side of the knitting needle support projection 11 that is moved away from the tooth opening 2 to prevent accidents such as damage. Is possible. Since the protrusion 11 and the slope 39 protrude in an island shape, the space around the hook 31b can be widened. As a result, there is a margin even when the knitting yarn is pulled in, and the knitting yarn hanging on the hook 31b can be prevented from coming into contact with the surroundings. In the state where the needle body 23b is advanced to the tooth mouth 2, if the support portion 33 is provided in the fixed thin force 9, the side can be supported. In addition, the mouthpiece wire 13 also acts effectively on the compound needle 21b, and assists in knocking over.

3A and 3B show examples of the sinker member 50 that can be used as the fixed thin forces 9 and 10 of FIGS. 1, 2A, and 2B. 3A is a plan view and FIG. 3B is a front view. A thin force loop is formed on the knitted fabric as the fixed thin force 9, 10 at the tip of the plate-like top 51. Minutes. A through-hole 52 is formed in the vicinity of the tip of the plate-like top 51, and the tooth-hole wires 13 and 14 in FIGS. 1, 2A and 2B pass therethrough. The plate-like top part 51 is formed at the tip of a mounting part 53 that is formed in an arcuate shape. A latching portion 54 is formed near the tip of the mounting portion 53 and can be positioned by hanging on sinker hooking wires 15 and 16 penetrating near the tips of the lower needle beds 3b and 4b. The curvature of the mounting portion 53 is provided along the outer shape of the lower surface side of the lower needle beds 3b and 4b. A fixing portion 55 is formed at the base end of the mounting portion 53 and has a through hole 56. The fixing portion 55 can be fitted into a recess provided in the lower surface of the lower needle beds 3b and 4b, and a thin force fixing wire 60 described later can be passed through the through hole 56.

As shown in FIG. 3A, the plate-like top portion 51 is thinner than the mounting portion 53. However, the portions of the knitting needle support protrusions 11 and 12 have the same thickness as the mounting portion 53. Such a shape can be formed by cutting a plate having the thickness of the mounting portion 53. Further, such a shape can be formed by bonding a plurality of plate materials. Further, the fixed thin forces 9 and 10 are obtained by attaching the proximal end portion to the needle groove so that only the distal end that functions as the thin force protrudes into the tooth opening 2.

FIG. 4 schematically shows a wider range of the configuration of the four-bed flat knitting machine 1 than in FIG. The fixed thin forces 9, 10 are fixed by passing thin force fixing wires 60, 61 through the lower needle beds 3b, 4b. The knitting operations of the needle bodies 23 and 24 and the sliders 25 and 26 of the compound needles 21 and 22 are controlled by cams mounted on a carriage that moves along the front needle bed 3 and the rear needle bed 4. A yarn feeder for supplying knitting yarn is provided above the mouth opening 2 and moves along with the carriage. In the four-bed flat knitting machine 1, the front and back needle beds are divided into the lower needle beds 3b and 4b, the front upper needle bed 3a and the rear lower needle bed 4b, and the front lower needle bed 3b and the rear upper needle bed. A knitted fabric can be knitted with each combination of needle beds 4a.

FIG. 5 shows a state in which the needle body 23a is retracted in FIG. The positions of the knitting needle support projections 11 and 12 are within the range through which the needle bodies 23a and 24a of the upper needle beds 3a and 4a pass, and even if the force passes through the sliders 25b and 26b of the lower needle beds 3b and 4b, the positions shown in FIG. Explain! / Except for the guides of the blades 37, 38, which can be beaten, the range should not cause interference.

FIG. 6 shows that the knitting needle support protrusion 11 and the mouth wire 13 act equally on the front needle bed 3 shown on the left side in assisting knockover from the compound needles 21a and 21b. Nokko The assisting of the bar is performed by pulling the old loop over the sliders 25a and 25b on the knitting needle support protrusion 11 and the tooth lower 13 and below the tooth opening. The positional relationship between the knitting needle support protrusion 11 and the slider 25a and the positional relationship between the mouth wire 13 and the slider 25b are relatively equal, and assistance for knockover can be performed equally.

Although the above description is about the four-bed flat knitting machine 1 in which two stages of needle beds are opposed to each other before and after the mouth 2, it is sufficient that at least one side has two stages. That is, the present invention can be similarly applied to a flat knitting machine in which at least one of the front and back needle beds facing each other with the tooth mouth 2 interposed therebetween has two stages. The lower needle bed 3b, 4b of the two-stage needle bed has a plurality of knitting needles that perform knitting operations by moving back and forth from the lower needle beds 3b, 4b to the tooth opening 2 and an upper needle bed. A plurality of fixed thin forces 9, 10 acting as a thin force may be provided for both of the plurality of knitting needles that advance and retract from 3a, 4a to the mouth 2 and perform the knitting operation. The fixed thin forces 9 and 10 do not interfere with the knitting operation in which the knitting needles of the lower needle beds 3b and 4b move forward and backward with respect to the tooth opening 2, and the knitting needles of the upper needle beds 3a and 4a move against the tooth opening 2. The knitting needle supporting projections 11 and 12 projecting from the upper needle beds 3a and 4a toward the side of the knitting needle that is advanced to the tooth mouth 2 may be provided at the position facing the side surface of the knitting needle that is in the advanced state. Even if the knitting needle that advances from the upper needle bed 3a, 4a to the tooth mouth 2 receives a load on the side, the knitting needle support projections 11 and 12 with fixed thin force 9, 10 are supported and supported, so large bending is suppressed. Is done. Since the knitting needle support protrusions 11 and 12 protrude only to the side of the knitting needle, unlike a penetrating material such as a wire rod, the knitting needle support protrusions 11 and 12 are provided at positions close to the tooth opening 2 where there is little interference with the knitting needle. Support can be done effectively.

Further, it is not always necessary to provide the knitting needle support protrusions 11 and 12 for a plurality of knitting needles. Since the side load acting on the knitting needle is increased on the side end side of the knitting width, the stitch that requires assistance for the side load is on the end side of the knitting width. Therefore, the knitting needle support protrusions 11 and 12 do not have to be provided at positions where the needle bed is often near the center of the knitting width. However, in a position where the knitting needle support protrusions 11 and 12 are not provided, it is necessary to prevent a large lateral load from being generated, and knitting is restricted. If the knitting needle support protrusions 11 and 12 are provided in the front part of the needle bed, it is possible to prevent the knitting from being restricted.

When the knitted fabric is knitted, the tip of the needle bed It also contributes to helping you when The knitting needle that has advanced into the tooth opening and received the knitting yarn on the hook also retracts the tooth loca and forms a new loop of the stitch while drawing the knitting yarn. The old loop of the knitted stitch that has been knitted first is pulled by the knitted fabric that is knitted down at the mouth so that it can go over the hook of the knitting needle and release the hook force. The knitted fabric connected to the old loop of the stitch is pulled to the direction of the tip of the needle bed, and the direction is changed downward at the tip. If a hard member such as a piano wire is attached to the tip of the needle bed separately from the needle bed, the friction of the knitting yarn at the tip of the mouth becomes small, and the knock-over is facilitated.

However, since the tip of the upper needle bed is farther away from the teeth than the lower needle bed, it is a piano wire that helps knock over the knitting needle on the upper side. Whatever wire is provided, it must be placed in a position where the upper and lower knitting needles do not interfere when they advance into the mouth. In order to enable an arrangement that prevents interference, the upper needle bed must also be arranged with the lower needle bed force separated. If the distance between the upper and lower needle beds is increased, the filling performance in the opposing upper and lower needle knitting will be significantly reduced. For this reason, a wire such as a piano wire cannot be passed through the top end portion. The stitches that require the assistance of knockover are on the end side of the knitting width, and the stitches are pulled sideways toward the center of the knitting width. It can be performed.

The present invention can be implemented in various other forms without departing from the spirit or main characteristic power thereof. Accordingly, the above-described embodiment is merely an example in all respects, and the scope of the present invention is shown in the claims, and is not limited to the text of the specification. Further, all modifications and changes belonging to the scope of claims are within the scope of the present invention.

Industrial applicability

According to the present invention, at least one of the front needle bed and the rear needle bed of the flat knitting machine has two upper and lower needle beds, and the lower needle bed of the two needle beds. A plurality of fixed thin forces are provided in the mouth-mouth side portion. The fixed thin force acts as a thin force on the knitting needle that performs the knitting operation by moving back and forth from the lower needle bed and the upper needle bed to the mouth. The fixed thin force should not interfere with the knitting operation in which the knitting needle on the lower needle bed moves forward and backward with respect to the tooth opening. In addition, at the position facing the side of the knitting needle in the state where the knitting needle of the upper needle bed is advanced with respect to the mouth, a protrusion protruding toward the side of the knitting needle that is advanced to the upper needle bed force tooth is provided. It is. When the knitting needle receives a load on the side and bends, the knitting needle comes into contact with the protrusion, and this can suppress a large bend. Since the protrusion only protrudes to the side of the knitting needle, unlike a penetrating material such as a wire rod, it is provided at a position close to the mouth of the tooth with little interference with the knitting needle to effectively support the knitting needle. be able to.

According to the present invention, a fixed thin force is arranged between a plurality of knitting needles arranged side by side on each needle bed, and protrusions are provided on both side surfaces of each fixed thin force. Since the protrusions protrude from the fixed thin forces on both sides toward each knitting needle, large bending can be suppressed by the protrusions for any load on both sides of the knitting needle.

Further, according to the present invention, for example, when the slider of the compound needle disclosed in Japanese Patent No. 3379947 is advanced to the tooth opening, the tips of the two blades are guided to the inclination connected to the protrusion protruding from the fixed thin force. Thus, the lateral opening of the blade can be reduced. The blade tip can be reliably guided even when the slider is manually moved forward and backward during maintenance of the flat knitting machine, or when the slider moves away from the route of the cam that drives the slider. That is, it is possible to prevent an accident that would damage the blade tip if there is no inclination.

Further, according to the present invention, the side support for the knitting needle of the lower needle bed and the side support for the knitting needle of the upper needle bed can be performed simultaneously by the fixed thin force.

Claims

The scope of the claims

[1] including a front needle bed and a back needle bed that are arranged to face each other across the mouth,

At least one of the front needle bed and the rear needle bed has two upper and lower needle beds, and the lower side of the lower side needle bed of the second stage needle bed Multiple fixed knitting needles that act as a thin force on both the knitting needles that advance and retract from the needle bed to the mouth and perform the knitting operation and the multiple knitting needles that advance and retract from the upper needle bed to the mouth and perform the knitting operation Thin power is provided,

The fixed thin force includes a knitting needle in a position that does not interfere with the knitting operation in which the knitting needle of the lower needle bed advances and retreats with respect to the tooth opening and the knitting needle of the upper needle bed advances with respect to the tooth opening. A flat knitting machine characterized in that a protrusion projecting toward the side surface of the knitting needle that advances from the upper needle bed to the tooth opening is provided at a position facing the side surface.

[2] In the two-stage needle bed, each knitting needle and each fixed thin force are alternately arranged,

2. The flat knitting machine according to claim 1, wherein the protrusions are provided on both side surfaces of each fixed thin force.

[3] The knitting needle which performs knitting operation by moving forward and backward from the lower needle bed to the tooth opening includes a slider including two blades formed with tanda at the tip of the tooth opening side independently of the needle body. It is a compound needle that can move forward and backward with respect to the mouth and opens and closes the hook of the needle body with a blade of the slider, and the protrusion of the fixed thin force is provided with a slope that reduces the amount of protrusion when the tooth locus moves away, The flat knitting machine according to claim 1 or 2, wherein the blade tip of the composite needle on the lower side needle bed is guided by an inclination.

[4] The flat knitting machine according to any one of claims 1 to 3, wherein the fixed thin force also has a function of side support with respect to the knitting needle of the lower side needle bed.